Título

Towards the Development of a Low-Cost Irradiance Nowcasting Sky Imager.

Autor

Luis Valentín

Manuel I. Peña Cruz

Daniela Moctezuma

César M. Peña Martínez

Carlos A. Pineda Arellano

ARTURO DIAZ PONCE

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Materias

INGENIERÍA Y TECNOLOGÍA - (CTI) CIENCIAS TECNOLÓGICAS - (CTI) TECNOLOGÍA ENERGÉTICA - (CTI) GENERACIÓN DE ENERGÍA - (CTI) GENERACIÓN DE ENERGÍA - (CTI)

Resumen o descripción

Solar resource assessment is fundamental to reduce the risk in selecting the solar

power-plants’ location; also for designing the appropriate solar-energy conversion technology

and operating new sources of solar-power generation. Having a reliable methodology for solar

irradiance forecasting allows accurately identifying variations in the plant energy production and,

as a consequence, determining improvements in energy supply strategies. A new trend for solar

resource assessment is based on the analysis of the sky dynamics by processing a set of images of the

sky dome. In this paper, a methodology for processing the sky dome images to obtain the position

of the Sun is presented; this parameter is relevant to compute the solar irradiance implemented in

solar resource assessment. This methodology is based on the implementation of several techniques in

order to achieve a combined, fast, and robust detection system for the Sun position regardless of the

conditions of the sky, which is a complex task due to the variability of the sky dynamics. Identifying

the correct position of the Sun is a critical parameter to project whether, in the presence of clouds,

the occlusion of the Sun is occurring, which is essential in short-term solar resource assessment, the

so-called irradiance nowcasting. The experimental results confirm that the proposed methodology

performs well in the detection of the position of the Sun not only in a clear-sky day, but also in a

cloudy one. The proposed methodology is also a reliable tool to cover the dynamics of the sky.

Editor

Applied Sciences

Fecha de publicación

2019

Tipo de publicación

Artículo

Versión de la publicación

Versión publicada

Recurso de información

http://centrogeo.repositorioinstitucional.mx/jspui/handle/1012/304

Formato

application/pdf

Idioma

Inglés

Audiencia

Público en general

Repositorio Orígen

Repositorio Institucional de CENTROGEO

Descargas

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